Area Included
Primary Map/Chart Location
Secondary
Notes
Ref.
Location
File No.
No.
Date
Month
Title
Origin
Map/Chart ID
Sheet
Format
Type
Scale
Size (in.)
1
2
3
4
Location
Record No.
Hydrographic survey of bar and
20
1870
entrances and approaches to
USCS
OS
EC
EB
Register No. 1177
1 of 1
BL CM
BA
1:10000
14 x 24
DPW
RG-06-05
F140
Mylar copy is reversed.
Humboldt Bay, CA
Composite of the entire Humboldt Bay and
Large oversize
surrounding marshes; also shows some
21
1870
Humboldt Bay Section X Composite
USCS
HB
No. 1174
1 of 1
CM
BA TO
1:10000
25 x 60
DPW
in brown flat
land features; earliest comprehensive
folder
mapping of Humboldt Bay.
Mylar copy is reversed, shows Entrance
22
1871
Hydrography of Humboldt Bay, CA
USCS
EC
EB
SJ
Register No. 1176
1 of 2
BL CM
BA
1:10000
14 x 24
DPW
RG-06-06 A
F140
Channel, Entrance Bay, South Jetty.
Mylar copy is reversed; shows North
23
1871
Hydrography of Humboldt Bay, CA
USCS
NB
NC
Register No. 1176
2 of 2
BL CM
BA
1:10000
14 x 24
DPW
RG-06-06 B
F140
Channels and North Bay.
Scale bars shown but numbers unreadable;
Examination of channel across
scalable features can be used to determine
24
1875
USCS
OS
EC
Register No. 1328
1 of 1
BL CM
BA
none
15 x 24
DPW
RG-06-08
F140
Humboldt Bar, CA
scale; copy quality poor, Mylar copy is
reversed, shows Entrance Channel.
Map of parts of Humboldt Bay survey
25
1880
Sep - Oct
War Dept.
NB
1 of 1
BL
BA
1:3600
28 x 12
DPW
RG-06-01
F139
of mouth of Mad River Slough
NA-Cartographic
Shows dredging areas along Eureka
WD Board
records of the War
Channel across from Woodley Island,
Improvement of channels in Humboldt Eng. Off. Ch.
Dept, Office of the
26
1881
W 469
1 of 1
BW
BA
1:3600
18 x 26
DPW
RG-06-02
F139
Arcata Channels, Hookton Slough at
Bay (1881 and 1882)
Eng.
Chief of Engineers
Salmon Creek and Hookton Slough at
USArmy
RG No.77 File W
Indian Mound Slough.
469-8
Shows comparison of high and low waters:
probably
27
1882
Entrance to Humboldt Bay
EC
none
1 of 1
BL
BA
28 x 40
DPW
RG-06-13
F140
NA-RG No.77
HW for 28 August 1881; LW for 29 August
US Eng
1881;HW and LW for 1 June 1889.
not labeled,
NA RG-77 Civil
Dated 17 January 1883; heavy black line
28
1883
Jan
Humboldt Bay, CA
but is WD-
EC
EB
NC
FL W-405
1 of 1
2-BW
BA
1:30000
17 x 18
DPW
RG-06-03
F140
Works Map File W- showing projected low water jetty upon
COE
405
south sands (future South Jetty).
Humboldt Bay, CA Surveys of bar and
File: 5 Div:2 Sheet: 70
29
1883
US Eng.
OS
EC
EB
1 of 1
2-BL
BA
1:30000
28 x 40
DPW
RG-06-09
F140
entrance (1851 1858 1870 1875 1881
No.:232
1882 1883)
NA RG No. 77 Civil Shows location of entrance and approximate
Ch. Eng.
30
1883
Sketch of Entrance to Humboldt Bay
EC
W 416
1 of 1
BW
BA
unknown
18 x 21
DPW
RG-06-01
F143
Works Map File W- position of seawall and proposed railroad
USArmy
416
tracks on South Jetty.
Mylar copy is reversed, shows North
31
1884
Humboldt Bay and Bar, CA
USC&GS
EC
NC
NB
Register No. 1635
2 of 2
BL CM
BA
1:20000
24 x 36
DPW
RG-06-07
F140
Channels and North Bay.
32
1886
Feb
Humboldt Bay, CA
USCS
HB
No. 632
1 of 1
2-BW 1-PP
BA
1:30000
33 x 27
DPW
RG-06-06
F114
NA-Cartographic
records of the War
Shows approximate location of a training
Dept, Office of the
33
1886
Humboldt Bay, CA
WD-COE
HB
1 of 1
BW PP
BA
1:10000
18 x 26
DPW
RG-06-03
F139
wall at entrance, along with shorelines of
Chief of Engineers
1851 and 1887.
RG No.77 File W
469-7
Shows present-day shoreline, 1870
not labeled,
Record of survey for U.S. Corps of
Book 48 of Surveys
Humboldt County shoreline, and 1919 shoreline for USACE
34
1888
but prepared EC
NC
2 sheets
2-BL
TO
1:2400
28 x 18
DPW
F140
Engineers, 18 January 1888
Pages 57 and 58
Recorders Office dredge disposal location on Samoa
for USACE
Peninsula.
WD Board
Fields Landing Channel, Humboldt
Fields Landing pierhead and bulkhead lines;
Eng. Off. Ch.
NA RG-77 #W-573-
35
1890
Sep
Bay, CA, survey of 15-20 September
FL
SS
W-573-2
1 of 1
BW
BA
1:2400
27 x 40
DPW
RG-06-01
F141
soundings are reduced to low water of U.S.
Eng.
2
1890
gauge at South Spit.
USArmy
C5
Appendix C Listing of Available Maps and Charts by Date
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